摘要
现有的安全壳完整性分析,主要针对设计基准事故条件下安全壳内部压力的响应进行分析。而AP1000的安全壳事故承压分析不仅包括设计基准事故,还包括严重事故情况下的完整性分析。安全壳完整性分析的过程中所使用的程序、设定的条件都是较为保守的,这就使得安全壳有很大裕度。而在相关试验数据愈加充分并且人们对相关事故进程与机理的认知有较大提高的条件下,使用最佳估算来对安全壳完整性进行分析能够在保证基本裕度的条件下,较合理地减小其设计保守性,为今后我国更大功率的非能动核电厂安全壳设计与建造提供方便。
Containment integrity analyses for current nuclear power plants（NPPs） mainly focus on the internal pressure caused by design basis accidents（DBAs）.In addition to the analyses of containment pressure response caused by DBAs,the behavior of containment during severe accidents（SAs） are also evaluated for AP1000 NPP.Since the conservatism remains in the assumptions,boundary conditions and codes,margin of the results of containment integrity analyses may be overestimated.Along with the improvements of the knowledge to the phenomena and process of relevant accidents,the margin overrated can be appropriately reduced by using the best estimate codes combined with the uncertainty methods,which could be beneficial to the containment design and construction of large passive plants（LPP） in China.
出处
《核科学与工程》
CSCD
北大核心
2010年第2期181-192,共12页
Nuclear Science and Engineering
